Your best squat depth is the deepest range you can control for the job you are doing. A deeper squat takes the hip lower. Parallel squats ranked second, while half squats had a narrower carryover.2 Strength follows the range you practice. SubscribeWatch control, not one body positionSome lifters see their pelvis tuck under and their lower-back position change near the bottom of a squat. Age does not automatically rule out a deeper squat, and a past knee issue does not make every deeper rep unsafe.